长江上游渣角滩航道整治试验研究
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摘要
长江上游渣角河段为典型的分汊河道,具有"弯、浅、险、急"的碍航特性,整治难度较大。综合考虑其滩险成因、整治目标及主、支汊关系等因素后,提出3种不同的整治思路,并采用物理模型进行试验研究。结果表明:开辟新航槽,调整分流比,获取两汊平衡的整治效果较好,可根本解决碍航问题,能够实现两汊同时通航。
Zhajiao river reach is a typical branch channel in the upper reaches of the Yangtze River,which has the obstruction characteristics of bend, shallow, danger and torrent, so it is difficult to implement the regulation. Considering comprehensively the reasons of navigation obstruction, the target of regulation and the relation between two branches,we put forward three different ideas,and carry out experimental research by the physical model. The results show that the effect of opening a new navigation channel,adjusting the split ratio and obtaining the balance between two branches is better,which can fundamentally solve the problem of navigation obstruction and realize simultaneous navigation of the two branches.
Zhajiao river reach is a typical branch channel in the upper reaches of the Yangtze River,which has the obstruction characteristics of bend, shallow, danger and torrent, so it is difficult to implement the regulation. Considering comprehensively the reasons of navigation obstruction, the target of regulation and the relation between two branches,we put forward three different ideas,and carry out experimental research by the physical model. The results show that the effect of opening a new navigation channel,adjusting the split ratio and obtaining the balance between two branches is better,which can fundamentally solve the problem of navigation obstruction and realize simultaneous navigation of the two branches.
引文
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[2]陈明栋,文岑.澜沧江小橄榄坝滩整治试验研究[J].泥沙研究,2004(5):72-76.
[3]付中敏,闫军,刘怀汉.长江中游监利河段河床演变与航道整治思路[J].水运工程,2010(6):100-107.
[4]赵志舟,吕娜.长江上游急弯分汊河段通航整治汊道选择[J].水运工程,2009(10):112-117.
[5]PAN Y,DOU X P,GAO X Y,et al.The effect of regulation projects on the water and sediment dynamic in Bifurcation Estuaries[J].Procedia engineering,2015(116):786-793.
[6]童朝锋.分汊口水沙运动特征及三维水流数学模型应用研究[D].南京:河海大学,2005.
[7]SMITH L M,WINKLEY B R.The response of the Lower Mississippi River to river engineering[J].Engineering geology,1996(45):433-455.
[8]姚仕明,余文畴,董耀华.分汊河道水沙运动特性及其对河道演变的影响[J].长江科学院院报,2003(1):7-9.
[9]蒋孜伟,许光祥,童思陈.澜沧江小白塔滩航道整治[J].重庆交通大学学报(自然科学版),2013(4):687-691.
[10]钟亮,许光祥,周鑫靖.长江上游胡家滩航道整治数值模拟研究[J].水运工程,2015(5):153-160.